A patient taking warfarin has a very high INR but no active bleeding. Which medicine reverses the anticoagulant effect over several hours?
Correct answer: A. Vitamin K
- A. Vitamin K
- B. Protamine sulfate
- C. Naloxone
- D. Desmopressin
Explanation
Vitamin K restores production of vitamin K dependent clotting factors and reverses warfarin effect, although its action is not immediate. Protamine reverses heparin, while naloxone reverses opioids and desmopressin has different indications.
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About Emergency Drugs and Antidotes
Emergency pharmacology covers drugs used in cardiac arrest, shock, severe allergy, acute asthma, seizures, poisoning and hypoglycaemia, including adrenaline, atropine, naloxone, flumazenil and selected antidotes. The focus is on indications, routes, rapid adverse effects, dose safety and matching a toxic substance with its specific reversal agent.
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50 free Emergency Drugs and Antidotes MCQs from Nursing Pharmacology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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